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Summary of Significant Accounting Policies - Additional Information (Detail) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 15, 2018 Facility Position | May 31, 2018 USD ($) | May 31, 2017 USD ($) | Nov. 30, 2016 USD ($) Segment | Feb. 28, 2017 USD ($) | May 31, 2018 USD ($) Entity Segment | May 31, 2017 USD ($) Entity Segment | May 31, 2016 USD ($) | May 31, 2009
Significant Of Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Number of business acquisition | Entity |  |  |  |  |  | 7 |  |  |
Number of reportable segments | Segment |  |  |  | 3 |  | 3 | 3 |  |
Net transactional foreign exchange losses |  |  |  |  |  | $ 12,300,000 | $ 6,400,000 | $ 24,400,000 |
Cost of sales |  |  |  |  |  | 3,140,431,000 | 2,792,487,000 | 2,726,601,000 |
Bad debt expense |  |  |  |  |  | 9,100,000 | 16,000,000 | 8,700,000 |
Number of manufacturing facilities closed | Facility | 2 |  |  |  |  |  |  |  |
Number of positions eliminated | Position | 154 |  |  |  |  |  |  |  |
Inventory write-downs |  | $ 36,500,000 |  |  |  |  |  |  |
Inventory write-offs |  | 1,200,000 |  |  |  |  |  |  |
Goodwill and Other Intangible Asset Impairments |  |  |  |  |  |  | 193,198,000 |  |
Business acquisition, fair value of goodwill |  | 1,192,174,000 | $ 1,143,913,000 |  |  | 1,192,174,000 | 1,143,913,000 | 1,219,630,000 |
Intangible asset impairment loss |  |  | $ 0 |  |  | 0 |  |  |
Number of other reporting units |  |  | no |  |  |  |  |  |
Advertising cost |  |  |  |  |  | 58,000,000 | 52,300,000 | 49,700,000 |
Research and development cost |  |  |  |  |  | 69,700,000 | 64,900,000 | 61,500,000 |
Litigation settlement fund |  |  | $ 9,300,000 |  |  |  | 9,300,000 |  |
Gain on remeasurement of joint venture ownership |  |  |  |  |  |  |  | $ 7,972,000 |
Total undiscounted future minimum payments outstanding for operating lease obligations |  | 209,600,000 |  |  |  | 209,600,000 |  |  |
Carboline Dalian |  |  |  |  |  |  |  |  |
Significant Of Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Remaining ownership interest acquired by parent |  |  |  |  |  |  |  | 51.00% |
Increased ownership interest by parent |  |  |  |  |  |  |  | 100.00% |
Percentage of ownership |  |  |  |  |  |  |  |  | 49.00%
Restore Indefinite-lived Tradename |  |  |  |  |  |  |  |  |
Significant Of Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Intangible asset impairment loss |  |  |  |  | $ 4,900,000 |  |  |  |
Kirker Reporting Unit |  |  |  |  |  |  |  |  |
Significant Of Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Fair value in excess of carrying value |  |  |  |  |  |  |  | 8.00% |
Goodwill and Other Intangible Asset Impairments |  |  |  | $ 188,300,000 |  |  |  |  |
Business acquisition, fair value of goodwill |  |  |  | $ 0 |  |  |  |  |
Intangible asset impairment loss |  |  |  |  |  |  | 46,000,000 |  |
Third Party | Shipping costs |  |  |  |  |  |  |  |  |
Significant Of Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Cost of sales |  |  |  |  |  | $ 164,700,000 | 148,900,000 | $ 145,300,000 |
Industrial Segment |  |  |  |  |  |  |  |  |
Significant Of Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Number of business acquisition | Entity |  |  |  |  |  | 3 |  |  |
Inventory write-downs |  | 1,200,000 |  |  |  |  |  |  |
Business acquisition, fair value of goodwill |  | 537,318,000 | 516,335,000 |  |  | $ 537,318,000 | $ 516,335,000 | 475,409,000 |
Consumer Segment |  |  |  |  |  |  |  |  |
Significant Of Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Number of business acquisition | Entity |  |  |  |  |  |  | 2 |  |
Inventory write-downs |  | 36,500,000 |  |  |  |  |  |  |
Business acquisition, fair value of goodwill |  | $ 477,718,000 | $ 453,600,000 |  |  | $ 477,718,000 | $ 453,600,000 | $ 572,507,000 |
Intangible asset impairment loss |  |  |  |  |  |  | $ 53,000,000 |  |

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